Sigrid's 2021 Birthday Crossword, with Bonus

12345678910
Across
  1. 4. this present is in the works (2 words)
  2. 8. which one have you already received (2 words)
  3. 9. they were number 1 in the German charts in 1968 with the Mighty Quinn (and very close to home!)
  4. 10. This Beatles song was number one in in the US charts in 1968 (2 words)
Down
  1. 1. aged 18 this Welsh singer was number 1 in the UK charts in 1968 (Muttergottes Hüpfersippe auf D)
  2. 2. Michael resisted them in number __ but agreed to in the end (as always)
  3. 3. how many presents are you receiving this year?
  4. 5. what all three presents have in common
  5. 6. this present has not yet been found. Further hint: beginning of your new country; comparative ending of easy and the last one in the middle
  6. 7. this hit by the German Schlägersänger Roland Wächtler was number 1 in CH in 1968 (think "yes to Monday)